USB hub



FIG. 1 is a front, bottom and left side perspective view of a USB hub,showing my new design;

FIG. 2 is a rear, top and right side perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is an enlarged top plan view thereof; and,

FIG. 8 is an enlarged bottom plan view thereof.

The broken lines shown in the drawings illustrate portions of the USBhub that form no part of the claimed design.

CLAIM The ornamental design for a USB hub, as shown and described.